<tr>
  <td><%= role.presentation %></td>
  <td><%= role.permissions.blank? ? "Nejsou uvedena" : role.permissions %></td>
  <td>
    <% permitted_to? :delete, :admin_roles do %>
      <%= button_to_delete "X", admin_role_path(role) %>
    <% end %>
    <% permitted_to? :edit, :admin_roles do %>
      <%= button_to_edit "Editovat", edit_admin_role_path(role) %>
    <% end %>
  </td>
</tr>